Electronics Forum: brush (Page 4 of 29)

Nickel/Hard Gold thickness

Electronics Forum | Mon Feb 27 09:31:30 EST 2012 | pauld

Hi Dave, Picture a camera mounted on top of a fixed base that pans 360 deg. back and forth. The motor connects through a circular slip ring board with brush connection. The rings are hard gold and the typical brush material is soft. Unlike the armatu

Re: Cooling racks

Electronics Forum | Fri Sep 22 06:59:45 EDT 2000 | jackofalltrades

For several years now we have been using a short (4 feet) conveyor with brush wheels and a simple box fan mounted under it (blowing up) to cool the product.

Re: Fibres / threads inside PTHs

Electronics Forum | Fri May 05 14:44:35 EDT 2000 | Kal Chakraborty.

Hi Ashok, Is there any rework process on those assembl./PWB ..if yes --what kind of tools are your operators using now ...brush? spudger? cloths (is it lint free?) ect. I hope you are not talking about nodules in the hole barrel. Regards Kc.

Mixing no-clean solder with activated

Electronics Forum | Wed Jun 20 11:43:11 EDT 2001 | genny

M.G. Chemicals "Safety Wash Cleaner Degreaser". A primarily ethanol / methyl alcohol product. Part number "405". Brushes, Kim Wipes, or cotton swabs have all been used from time to time to apply it to the PCB.

Static Concerns

Electronics Forum | Mon Jan 11 10:29:07 EST 1999 | Tom OConnor

I know that static concerns are very important in your work. Are static concerns eliminated by the antic-static devices you wear or which are in your environment, or do the hand tools you use, such as picks, tweezers and brushes, need to be anti-stat

Excess Flux in uBGA rework

Electronics Forum | Tue Sep 25 09:57:40 EDT 2001 | nwyatt

In regards to your last question, - problem is failures and most think it is due to too much flux - we apply flux with a brush - amount applied depends on the operator applying it - the flux is very thick and will hold the part in place before reflo

Excess Flux in uBGA rework

Electronics Forum | Fri Sep 28 16:51:41 EDT 2001 | pcmarch

I have had success by applying the paste flux with my finger, using a finger cot and spreading it on the PCB. This seems to put it on more consistently than using a brush.

water soluble marking pen

Electronics Forum | Mon Nov 12 19:37:38 EST 2001 | dennis

Thanks! dry erase does not come off easily with water. I have to use brush to remove marks. Thanks for your input anyway!

Water Residue Stains - how to remove?

Electronics Forum | Wed Dec 19 11:52:24 EST 2001 | mparker

Have you tried to polish the flex with an ESD camel hair brush? The residual films - are they organic, left over from the water? Maybe try some TSP - tri-sodium phosphate, it's a mildly caustic detergent. A thorough rinse would be needed after using

cleaning NO clean

Electronics Forum | Tue Sep 10 22:29:01 EDT 2002 | scottefiske

Many times after initially cleaning in the solvents recommended by the paste/material manufacturer, a light white haze may still be visable...try using a soft bristle brush to remove the remaining residues. By this time the residues that remain will

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